CT-guided bipolar and multipolar radiofrequency ablation (RF ablation) of renal cell carcinoma: specific technical aspects and clinical results. - Sommer CM; Lemm G; Hohenstein E; Bellemann N; Stampfl U; Goezen AS; Rassweiler J; Kauczor HU; Radeleff BA; Pereira PL (Cardiovascular and interventional radiology, 2013)